Gas-burner.



7 PATENTED MAR. 14, 1905;

O. NIELSEN.

GAS BURNER APPLICATION FILED NOV. 25, 1903 Z SHEETS-SHEET lv 7171 71 .lli: ll

612/" Li ieisa/zfi No. 784,754. PATENTED MAR. 14, 1905.

' c. NIELSEN.

GAS BURNER.

APPLICATIOH FILED NOV. 25, 1903.

2 SHEETS-SHEET '2.

M Q 7 M17);

Patented March 14, 1905.

PATENT OFFICE.

CARL NIELSEN, OF COPENHAGEN, DENMARK.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 784,754, dated March 14, 1905.

Application filed November 25, 1903. Serial No. 182,653.

1'0 (LZZ whom it may concern:

Be it known that I, CARL NIELSEN, a subject of the King of Denmark, residing at Copenhagen, in the Kingdom of Denmark, have invented a new and useful Gas-Burner, of which the following is a specification.

The hitherto-known gas-burners provided with lighting attachments and arranged for automatically lighting the burner and extinguishing the pilot-light, and vice versa, fail to work satisfactorily, as they are unable to make proper use of the difference (which is very small) in the gas-pressures by day and by night, respectively.

My invention relates to improvements in such gas-burners whereby the change from the smaller gas-pressure in the day-time to the larger gas-pressure in the night-time is enabled to automatically light the burner and to extinguish the pilot-light, while the change from the larger night gas-pressure to the smaller day gas-pressure is enabled to automatically light the pilot-light and to extinguish the burner, this automatic change from the one kind of light to the other kind, and

vice versa, being effected gradually and with great safety by a lever system increasing sufficiently the force.

The improved gas-burner according to my invention can, moreover, be adjusted to the said difference in the gas-pressures, no matter whether it be large or small in proportion to the smaller or greater distance of the burner from the gas-works, respectively.

My improvements consist in a double-seated valve for controlling the two gas-inlets to the burner and the lighting attachment, one or more springs acting upon this double-seated part of the gas-tube and the branch tube being shown in elevation. Fig. 2 shows, on an enlarged scale, the double-seated valve with two springs for acting upon the same. Fig. 3 is a vertical longitudinal section through a modified gas-burner. Fig. i is a longitudinal section, on an enlarged scale, through the lever on the line {0 in Fig. 3; and Figs. 5 and 6 are details which will be referred to later on.

Similar characters of reference refer to similar parts throughout the several views.

In Fig. 1, (Z denotes the gas-tube, which is bifurcated into the upper tubeeand the branch tube f, leading to the storage vessel g. The upper tube 6 terminates in a gas-chamber c, in which a double-seated valve 7.: is arranged to move up and down for opening the inlet m to the lighting attachment 6 and closing the inlet Z to the burner, or vice versa. The inlet Z is formed in a bell Z, secured in a convenient manner in the tube 8. Above the bell Z the tube 8 is provided with several air-holes s for the admittance of fresh air, so that the tube 0* serves as a mixing tube or chamber. The burner a, which may be of any known construction, is shown as broken away. On the upper end of the branch tube f a casing a isfastened, which incloses a storage vessel g, made of fish-bladder, silk with a gas-tight inclosure of leather, or of other inextensible material and provided with a weight-plate q. The latter is pivotally connected witha lever i by means of a link 0. The lever i is fulcrumed at the tube 8, and its internal slotted arm 2' is hinged to the rod 1: of the doublese'ated valve k, this rod 7r being guided in suitable holes of the two sieves Wand l on the bell l.

The gas-pressure in the daytime being smaller than that in the night-time, the storage vessel g is collapsed during the day, but extended by filling with gas at the change from the smaller day gas-pressure to the larger night gas-pressure. The so-filled storage vessel y will then move the lever 2 upward and its internal arm i downward to detach the double-seated valve k from its upper seat Z- i. 0., the inlet for the burner a-so that the gas is allowed to pass from the gas-tube (Z c to the burner while being mixed with fresh air in the'mixing-tube 0*. The gas-mixture escaping from the burner a will be ignited by the pilot-light a. Two springs a and y) are inserted between the double-seated valve Zr and a suitable shoulder 7/ on the lighting-tube 7). These two springs are superposed by means of a disk 0, (see Fig. 2,) and the upper spring p is made weaker than the lower one, 0, so that on moving the valve Z: downward it will first compress the upper spring 7) and bear on the upper rim of the disk 0 before it can compress the lower spring 0 and close the inlet m to the lighting attachment. In a similar manner on the lever 11 being released the lower spring 0 will first extend and raise the disk 0, thus opening the lower inlet m, but without closing the upper inlet Z. Only on the pressure of the gas in the storage vessel 9 being sulficiently lowered will the upper spring be able to close the upper inlet, and thus extinguish the flame on the burner a. This means that the change from the pilot-light c to the burner-light, and vice versa, will always be effected gradually, so that the gas escaping from the burner will have time to ignite itself on the pilot-light c the same as the gas escaping from the lighting attachment will be ignited by the burner-light with certainty before the burner-light is extinguished.

The collapse of the storage vessel (j at the change from the larger night gas-pressure to the smaller day gas-pressure is effected by the weight-plate and also by means of an adjustable weight /a on the lever "1?, this taking place gradually, so that first the upper inlet Z is left open to allow the escaping from the lighting-tube 7; to ignite itself on the burnerlight before the latter is extinguished by the closure of the inlet 1 by the valve 7c. The motive of the weight-plate (1 is transmitted on the valve Z; by an unequal-armed lever system q 117.1, which multiplies the force of the inner pressure of the storage vessel 0 in its eli'ect on the valve 1:.

As the various gas-burners are at different distances from the gas-works, the gas-pressure will of course vary, and thereby also the difference between the day gas-pressure and the night gaspressure. For this reason it is necessary to so adjust the weight b or the spring in Fig. 3 that the automatic change from the one light to the other, and vice versa, will be attained with certainty.

It is immaterial where the storage vessel 1 should be disposed with reference to the gasburner. It may be arranged laterally, as shown at Fig. 1, or in the same center line, as shown at Fig. 3. Also the two springs 0 2) may be disposed on some other convenient place, from whence they can act upon the double-seated valve h. For example, the two springs n p in Fig. 1 may be replaced by one spring 0 on the weight-plate g in Fig. 3, it being assumed to be conical. In this case the casing a is preferably provided with a cover 92., against which the spring 0 can bear. Then the weight-plate (1 may be made so heavy that it will balance the gas-pressure in the day-time, and the spring 0 can be made comparatively weak. The spring or springs can be made adjustable in a known manner for increasing or diminishing its force. In case the storage vessel 9 is arranged beneath the gas-burner a suitable lever system, as illustrated in Fig. 3, or any other known transmitting system will have to be inserted between the weight-plate (1 and the lever 71 for placing the double-seated valve 7n under the control of the storage vessel 9.

The lever @I in Fig. 1 or d in Fig. 3 may be constructed otherwise. It may be convenient to render the whole apparatus independent of slight variations in the gas-pressure, such as frequently occur both in the day-time and at night. This can be effected in the manner that the lever 23 or 2' is loaded with a weight capable of motion, so that it will always roll into the lowest position. For example, a ball 71) may be employed, which is allowed to roll freely in the cavity of a hollow lever 2' as shown at Fig. 4,01 the movable load may be arranged on the external surface of the lever 21 or For instance, this lead may be in the shape of a carriage running along the lever in either direction. Also weighted levers, as shown at Figs. 5 and 6, whether single or two-armed, may be hinged to the lever i or at some convenient place and so arranged that they will automatically turn and increase the load upon that side of the lever which is lower than the other.

It is preferable to make the storage vessel g or g of an inextensible material, as otherwise the elasticity of the collapsible vessel would render it impossible for a slight difference in the gas-pressure to give the lever t' or 71 a sufficient stroke for properly actuating the double-seated valve or 70. It is also preferable to make the storage vessel of gas proof material to protect it against destruction.

Instead of the two springs 0 and p (shown at Fig. 2) and the spring 0, Fig. 3, any other springs may be employed.

The gasburner described so far can be varied in many respects without deviating from the spirit of my invention.

W hat I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of a gas-burner and a gas-lighting tube having their respective inlets opposite each other and spaced apart, with a double-seated valve operative between said inlets to admit gas alternately to the burner and the lighting-tube, a gas-pressure-operated de vice having a movable element, a lever having its fulcrum out of line with the valve and being further provided with arms of unequal length, a connection between the shorter arm of the lever and the valve, and a connection between the longer arm of the lever and the said movable element, substantially as described.

2. The combination of a gas-burner and a gas-lighting tube having their respective inlets opposite each other and spaced apart, with a double-seated valve operative between said inlets to admit gas alternately to the burner and the lighting-tube, a gas-pressure-operated device having a movable element, a lever having arms of unequal length, a connection between the shorter arm of the lever and the valve, a connection between the longer arm of the lever and the said movable element, and a weight carried by and shiftable longitudinally with respect to the longer arm of said lever, substantially as described.

3. The combination of a gas-burner and a gas-lighting tube having their respective inlets opposite each other and spaced apart, with a double-seated valve operative between said inlets to admit gas alternately to the burner and the lighting-tube, a gas-pressure-operated device having a movable element, a lever having arms of unequal length, a connection between the shorter arm of the lever and the valve, a connection between the longer arm of the lever and the said movable element, said longer arm of the lever being hollow, and a weight in said hollow arm shiftable by gravity therein by the movement of the lever, substantially as described.

4. The combination of a gas-burner and a gas-lighting tube having their respective inlets opposite each other and spaced apart, with a double-seatedvalve operative between said in lets to admit gas alternately to the burner and the lighting-tube, a collapsible storage vessel operated by gas-pressure, and one end of which is movable, a lever having its fulcrum out of line with the valve and being further provided with arms of unequal length, a connection between the shorter arm of the lever and the valve, and a connection between the longer arm of the lever and the movable end of the said collapsible storage vessel, substantially as described.

5. The combination of a gas-burner and a gas-lighting tube having their respective inlets opposite each other and spaced apart, with a double-seated valve operative between said inlets to admit gas alternately to the burner and the lighting-tube, a gas-pressure-operated device having a movable element, a connection, including a lever, between said movable element and the valve, to operate the latter and successively acting springs of unequal strength to resist the movement of the valve toward the inlet of the lighting-tube, substantially as described.

In testimony whereof I-have signed my name to this specification in the presence of two subscribing witnesses.

CARL NIELSEN.

VVitnessesz- HENRY HASPER, WOLDEMAR HAUPT. 

